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Recent content by phoebe

  1. P

    How to design a good differential amplifier?

    I think the most important is for your application, no one can have all the best parameter .
  2. P

    ESD question about protection circuit at the output

    ESD Question if your output buffer strong and close to the pad enough, then needn't I/O ESD protection
  3. P

    hspice- corners simulation

    .alter is very well
  4. P

    How to design amplifer, gain/power assumption or berkely?

    how to design amplifer operating point, dc gain, ac sweep for stability,output range, input common range
  5. P

    Matching of long transistors

    I also feel confused about the current mirror, which one can be controlled better, the normal (like 5u/2u)or the inversion transistor (2u/5u)?which one is more accurate?
  6. P

    How to cancel charge injection??

    what is the meaning of bottom sampling?
  7. P

    Common Centroid & Interdigitization

    common centroid differential pair is this disadvantage really? I think most of input device of differentia ampifer use this kind of method,common centroid, right?
  8. P

    Is working as a layout engineer boring?

    Is layout job boring? analog layout should not boring, it is a kinkd of art if you really like it.
  9. P

    about the polarity of cpip capacitor

    IN the layout, can the polarity connection makes some different? Or the two polarity connection can be changed each other?
  10. P

    about the foldback concept

    Can anyone help me to explain the concept of foldback or give me some material about it?
  11. P

    designing a charge pump pll

    pll design i want to design a charge pump pll,who can give me some papers?
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